Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence

A file of signals intelligence reports, messages, and correspondence issued by the Government Code and Cypher School and sent by the head ('C') of the Secret Intelligence Service (MI6) to the Prime Minister, Winston Churchill. This file includes the following reports: a BONIFACE report from Brigadier Jacob for the Prime Minister (PM); a BONIFACE report for Mr Loxley; on South-east Europe: a vital landing was reported to take place on Leros by the Germans during the night of November 15; the German Air Force (GAF) Command for the South-east day report for November 14; of a German bomber attack on Allied naval assets off Leros, on November 15; of damage caused to Axis assets on Greek airfields by Allied raids on November 15; the GAF Command for the South-east situation report for November 14; that on November 10 there was an Allied air attack on Split harbour, dated November 15; that a German steamship sank in Suda Bay after an explosion in the hold on November 13, with sabotage being suspected; that two submarines are to be fitted out as transports in Adriatic ports, on November 9, 13 and 14; and that Italian prisoners of war in the Balkans are to be sent to the Russian Front, on November 6; on the Russian Front: a GAF reconnaissance report for November 14; and a Crimea ground situation report for November 14; and on Southern Europe: two reports showing the total strength in tanks and assault guns of a formation, with its serviceability, on November 7 and 8.